On the Capacity of Quantum Private Information Retrieval From MDS-Coded and Colluding Servers

Matteo Allaix,Seunghoan Song,Lukas Holzbaur,Tefjol Pllaha,Masahito Hayashi,Camilla Hollanti

IEEE Journal on Selected Areas in Communications（2022）

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摘要

In quantum private information retrieval (QPIR), a user retrieves a classical file from multiple servers by downloading quantum systems without revealing the identity of the file. The QPIR capacity is the maximal achievable ratio of the retrieved file size to the total download size. In this paper, the capacity of QPIR from MDS-coded and colluding servers is studied for the first time. Two general...

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关键词

Servers,Codes,Quantum entanglement,Quantum communication,Quantum system,Mathematics,Random variables

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